Qiao Yu didn't care what the teachers were thinking, and even his ardent expectations for little Libaba's math competition had faded.
Yes, at this time, Qiao Yu had put most of his thoughts into studying number theory, especially prime numbers and large prime numbers.
Qiao Yu has his own understanding of mathematics.
He has always believed that mathematics is simply a subject that studies laws.
Whether it is the distribution of prime numbers, divisibility, or congruence, to put it bluntly, they are all rules. He believes that as long as he can find those potential rules that have not yet been discovered, he can master the rapid calculation of large prime numbers and even very large prime numbers.
Methods for factoring.
As long as he masters this method, all the wealth in the world will be sacrificed for him. It is no exaggeration to say that he can make a lot of money just by collecting protection fees.
Yes, Qiao Yu has thought about it. If he can really solve this puzzle, he will set up a company to provide password security services to major companies and institutions in need. If he can really succeed, maybe now
The richest people who are affectionately called daddy all have the urge to call him daddy Joe.
Qiao Yu has no interest in being a father, but he is really interested in money, and his interest in mathematics has become stronger than ever, especially in numbers.
Yes, not just for prime numbers, but for numbers, or to be more precise, integers. Because Qiao Yu believes that if you want to thoroughly study prime numbers, it is impossible to bypass the relationship between prime numbers and other integers.
For example, the quadratic reciprocity law mentioned in the book, the most basic tool of classical number theory, although it mainly describes the quadratic remainder relationship between two odd prime numbers, in Qiao Yu's view, this law also directly involves prime numbers.
relationship with other integers.
If Lan Jie knew Qiao Yu's mental journey at this time, he would probably be very pleased.
Under his guidance, Qiao Yu actually developed a strong and even intense interest in number theory, which is what Lan Jie wanted to see most. With the talent Qiao Yu has shown so far, it would be a pity not to study number theory.
Of course, there must be some surprises. After all, the content of algebra and number theory is actually too advanced for Qiao Yu's age.
But no matter what, under the driving force of becoming the richest man, Qiao Yu's feelings for number theory were too profound before, so that the trace of fear he had before disappeared, and his confidence quickly expanded to infinity.
If the good old man asked Qiao Yu about his sense of mathematics at this time, the answer would probably be deep love.
…
"Qiao Yu, why have you been so listless these past two days?" Xia Keke stared at Qiao Yu while eating breakfast and asked.
"Have you ever seen the moon at three o'clock in the morning?" Qiao Yu replied casually, earning a roll of his eyes.
"What are you doing if you don't sleep in the middle of the night?"
"Of course it's learning, learning makes me happy!"
"Studying in the middle of the night? What are you studying?"
"Mathematics! You are still young and don't understand how happy it is to learn real mathematics."
Qiao Yu said this very seriously. Xia Keke, who knew Qiao Yu very well, could tell that this guy was really interested in it, and couldn't help but curiously asked: "What is real mathematics?"
Hearing this question, Qiao Yu quickly took the last sip of powder and became energetic: "For example, do you know prime numbers?"
Xia Keke rolled her eyes again: "Nonsense, I'm in the rocket class! I learned prime numbers and composite numbers in the first grade, okay?"
"Then do you know why there are infinitely many prime numbers?" Qiao Yu asked nonchalantly.
Xia Keke frowned and thought carefully. After a while, he shook his head and said, "I remember the textbook directly said that there are infinite prime numbers. Is this a theorem?"
Qiao Yu said with excitement: "No, no, no, the theorems in mathematics are theorems only after they have been proved. In fact, the proof is very simple. First, assume that there are a finite number of prime numbers, from P1 to Pn, and then construct a new number N, N It is equal to the product of all prime numbers plus 1.
Because we assumed before that prime numbers are finite, but if N is divided by any prime number Pi, there will be a remainder of 1. This means that the new number N cannot be divided by any prime number. So N is either a new prime number, or there is a different number than the others. The prime factors of all prime numbers prove that there are infinitely many prime numbers. This is real mathematics."
Xia Keke pouted. Although her grades were indeed good, her math scores could only be said to be average. It was difficult to get such excitement for Qiao Yu, so she decisively changed the topic: "By the way, how did you do in the test yesterday? Like? They all said the last question in physics was quite difficult.”
"There was a problem with the physics paper yesterday? Are you in the rocket class?" Qiao Yu, who was still in a state of excitement, casually said contemptuously.
"Isn't the last circuit question difficult? Many people have done it wrong!" Xia Keke emphasized angrily.
"Circuit? Oh, that's the one I forgot to record. Which of the two methods is more energy-efficient? There are only two laws used, one is Joule's law and the other is Ohm's law. Can it be called difficult? It just needs a little transformation.
So the final answer must be the second one, connect the heating wire in series at point B. After calculation, the newly connected resistance value should be approximately equal to 18.33 ohms."
Qiao Yu said with certainty. After all, the test was just completed yesterday, so it would be difficult to forget it.
"I did the right thing, but many people did it wrong!" Xia Keke emphasized again.
"Oh, you're awesome!" Qiao Yu praised him heartily, but couldn't help but add: "But this kind of question is difficult, so joining the first class is a bit hard, right? Why do you think this Rocket Class is listening? Doesn’t it live up to its name?”
It's not that he lacks emotional intelligence, but after all, Xia Keke has been his little follower for many years, so Qiao Yu can't help but criticize him.
The most important thing is that now he no longer needs to pretend and can show off his cards. This thing in junior high school is indeed very simple.
"It's so simple, so you can get full marks?" Xia Keke asked.
"Mathematics, Physics and Chemistry are definitely no problem. The teachers of other subjects will have to deduct some points. After all, it is just a mock test, and the teacher is afraid that I will be proud. But if your Rocket Class is at this level, crushing you should not be a big problem." Qiao Yu was very honest.
said.
Xia Keke sneered: "Haha..."
She believed Qiao Yu's words and was very happy, but seeing Qiao Yu's confident look, she couldn't help but want to hit this guy.
Obviously her attitude had no impact on Qiao Yu at all.
"Many times we are so helpless. Some people don't work hard and don't know how weak they are. For example, your classmates who find this physics test difficult, I suggest they accept their mediocrity early and be kind to themselves.
, don’t force yourself to be so tired, life is not worth it.”
Chapter completed!